List of Nuclear Weapons - United States

United States

Notes: US nuclear weapons of all types (bombs, warheads, shells, and others) are numbered in the same sequence starting with the Mark 1 and (as of March 2006) ending with the W-91 missile warhead (which was canceled prior to introduction into service). All designs which were formally intended to be weapons at some point received a number designation. Pure test units which were experiments (and not intended to be weapons) are not numbered in this sequence.

In some cases, such as B53 nuclear bomb and W-53 warhead, and the W54 and Davy Crockett Mk-54, the same core nuclear system was used in multiple applications. This is indicated by the same sequence number for all versions of that nuclear weapon system.

In other cases, variants are assigned their own number, such as the B61 nuclear bomb which was the parent design for the W80, W81, and W84.

This list includes weapons which were developed to the point of being assigned a model number (and in many cases, prototypes were test fired), but which were then canceled prior to introduction into military service. Those models as listed as canceled, along with the year or date of cancellation of their program. Cultural references notwithstanding, neither the US nor the Soviet Union have acknowledged development of a true suitcase nuclear device.

  • Bombs — designated with Mark ("Mk") numbers until 1968, and with "B" numbers after that. "Test Experimental" bombs designated with "TX".
    • Mark 1 – "Little Boy" gun-type weapon (used against Hiroshima). (13-18 Kt, 1945–1950)
    • Mark 2 – "Thin Man" plutonium gun design—cancelled in 1944
      • Implosion Mark 2 – Another Manhattan Project plutonium implosion weapon, a hollow pit implosion design, was also sometimes referred to as Mark 2. Also cancelled 1944.
    • Mark 3 – "Fat Man" implosion weapon (used against Nagasaki). (21 Kt, 1945–1950)
    • Mark 4 – Post-war "Fat Man" redesign. Bomb designed with weapon characteristics as the foremost criteria. (1949–1953)
    • Mark 5 – Significantly smaller high efficiency nuclear bomb. (1-120 Kt, 1952–1963)
    • Mark 6 – Improved version of Mk-4. (8-160 Kt, 1951–1962)
    • Mark 7 – Multi-purpose tactical bomb. (8-61 Kt, 1952–1967)
    • Mark 8 – Gun-assembly, HEU weapon designed for penetrating hardened targets. (25-30 Kt, 1951–1957)
    • Mark 10 – Improved version of Mk-8 (12-15 Kt, cancelled May 1952).
    • Mark 11 – Re-designed Mk-8. Gun-type (8-30 Kt).
    • Mark 12 – Light-weight bomb to be carried by fighter planes (12-14 Kt).
    • Mark 13 – Improved version of Mk-6 (cancelled August 1954).
    • TX/Mark 14 – First deployable solid-fuel thermonuclear bomb (Castle Union device). Only five produced. (5 Mt)
    • Mark 15 – First "lightweight" thermonuclear weapon. (1.7-3.8 Mt, 1955–1965)
    • TX/Mark 16 – First weaponized thermonuclear weapon (Ivy Mike device). Only cryogenic weapon ever deployed. Only five produced. (6-8 Mt)
    • Mark 17 – High-yield thermonuclear. Heaviest U.S. weapon, second highest yield of any U.S. weapon. Very similar to Mk-24. (10-15 Mt)
    • Mark 18 – Very high yield fission weapon (Ivy King device).
    • Mark 20 – Improved Mark 13 (cancelled 1954)
    • Mark 21 – Re-designed variant of Castle Bravo test
    • Mark 22 – Failed thermonuclear design (Castle Koon device, cancelled April 1954).
    • Mark 24 – High-yield thermonuclear, very similar to Mk-17 but had a different secondary.
    • Mark 26 – Similar design to Mk 21 (cancelled 1956).
    • Mark 27 – Navy nuclear bomb (1958–1965)
    • B28 nuclear bomb (Mark 28) (1958–1991)
    • Mark 36 – Strategic nuclear bomb (1956–1961) 9-10 Mt
    • B39 nuclear bomb (Mark 39) (1957–1966)
    • B41 nuclear bomb (Mark 41) (1960–1976); highest yield US nuclear weapon (25 mt).
    • B43 nuclear bomb (Mark 43) (1961–1991)
    • B46 nuclear bomb or (Mark 46); experimental, design evolved into B53 nuclear bomb and W-53 warhead (cancelled 1958)
    • Mk 101 Lulu
    • B53 nuclear bomb (1962–1997; dismantled 2010-2011)
    • B57 nuclear bomb (1963–1993)
    • B61 nuclear bomb (1966-current service)
    • B77 nuclear bomb (cancelled 1977)
    • B83 nuclear bomb (1983-current service)
    • B90 nuclear bomb (cancelled 1991)
  • Nuclear artillery shells
    • 16-inch (406 mm)
      • W23 (1956–1962) Gun-type
    • 280mm:
      • W9 (1952–1957) Gun-type
      • W19 (1953–1956) Gun-type, W9 derivative
    • 8-inch (203 mm)
      • W33 (1956-1980s) Gun-type
      • W75 (cancelled 1973)
      • W79 (1981–1992)
    • 155mm
      • W48 (1963–1992)
      • W74 (cancelled 1973)
      • W82 (cancelled 1983 (W-82-0 Enhanced Radiation) and 1990 (W-82-1 fission only))
  • Atomic Demolition Munitions
    • W-7/ADM-B (c.1954-1967)
    • T4 ADM (1957–1963) Gun-type
    • W30/Tactical Atomic Demolition Munition (1961–1966)
    • W31/ADM (1960–1965)
    • W45/Medium Atomic Demolition Munition (1964–1984)
    • W54/Special Atomic Demolition Munition (1965–1989)
  • Missile warheads
    • W4 for SM-62 Snark missile (cancelled 1951)
    • W5 for MGM-1 Matador (1954–1963)
    • W7 for MGR-1 Honest John (1954–1960), Corporal SRBM (1955–1964), Nike Hercules SAM (1958-1960s)
    • W8 for SSM-N-8 Regulus, Gun-type (cancelled 1955)
    • W12 for RIM-8 Talos missile (cancelled 1955)
    • W13 for SM-62 Snark missile and Redstone MRBM (cancelled 1954)
    • W15 for missiles (cancelled 1957)
    • W21 for B-58 bomber, SM-64 Navaho missile (Cancelled 1957)
    • W25 for MB-1 "Ding Dong", later AIR-2 Genie (1957–1984)
    • W27 for SSM-N-8 Regulus missile (1958–1965)
    • W28 for AGM-28 Hound Dog missile, MGM-13 Mace missile (1958–1976)
    • W29 for (cancelled 1955)
    • W30 for RIM-8 Talos missile (1959–1979)
    • W31 for Honest John (1961–1985), Nike Hercules (1960s-1988)
    • W34 for Mk101 Lulu nuclear depth charge, Mk44 ASTOR torpedo, Mk105 bomb (1958–1976)
    • W35 for Atlas ICBM, Titan I ICBM, Thor IRBM, PGM-19 Jupiter (cancelled 1958)
    • W37 (cancelled 1956)
    • W38 for Atlas ICBM and Titan I ICBM (1961–1965)
    • W39 for Redstone MRBM (1958–1964)
    • W40 for MGM-18 Lacrosse SRBM (1959–1964)
    • W41 for (cancelled 1957)
    • W42 for Air to Air and Surface to Air missiles (cancelled 1961)
    • W44 for ASROC (1961–1989)
    • W45 for Little John rocket, RIM-2 Terrier and AGM-12 Bullpup missiles, MADM (1961-1969 (some 1988))
    • W46 for Redstone, Snark, B-58 (cancelled 1958)
    • W47 for Polaris SLBM (1960–1974)
    • W49 for PGM-19 Jupiter (1959–1963) and Thor IRBM (1959–1963)
    • W50 for MGM-31 Pershing (1960–1990)
    • W51 for various (program converted to W54 in 1959)
    • W52 for MGM-29 Sergeant (1962–1977)
    • W53 for LGM-25C Titan II (1962–1987)
    • W54 for Davy Crockett recoilless rifle and AIM-26 Falcon AAM (1961–1972)
    • W55 for Subroc (1965–1989)
    • W56 for Minuteman I and II ICBM (1963–1993)
    • W58 for Polaris A-3 SLBM (1964–1982)
    • W59 for Minuteman I ICBM and Skybolt missile (1962–1969)
    • W60 for Typhon SAM (cancelled 1963)
    • W62 for Minuteman III ICBM, (1970–2010)
    • W63 for Lance SRBM (cancelled 1966)
    • W64 for Lance SRBM (cancelled 1964)
    • W65 for Sprint ABM (cancelled 1968)
    • W66 for Sprint ABM (1970–1975)
    • W67 for Poseidon SLBM and Minuteman III ICBM (cancelled 1967)
    • W68 for Poseidon SLBM (1970–1991)
    • W69 for AGM-69 SRAM (1972–1990)
    • W70 for Lance SRBM (1973–1992)
    • W71 for LIM-49A Spartan ABM (1974–1975; dismantled 1992)
    • W72 for AGM-62 Walleye (1970–1979)
    • W73 for Condor missile (cancelled 1970)
    • W76 for Trident I SLBM (1978-current service)
    • W78 for LGM-30 Minuteman III (1979-current service)
    • W80 for AGM-86 ALCM, AGM-129 ACM and BGM-109 Tomahawk (1981-current service)
    • W81 for Standard missile, based on B61 (cancelled 1986)
    • W84 for BGM-109G Gryphon GLCM (1983–1991)
    • W85 for Pershing II IRBM (1983–1991)
    • W86 for Pershing II IRBM Earth penetrating warhead option (cancelled 1980)
    • W87 for Peacekeeper ICBM (1986–2005) and Minuteman III ICBM (2007-current service)
      • W87-1 for MGM-134 Midgetman ICBM (cancelled 1992)
    • W88 for Trident II SLBM (1988-current service)
    • W89 for AGM-131 SRAM II (cancelled 1991)
    • W91 for SRAM-T (cancelled 1991)
    • RNEP (Robust Nuclear Earth Penetrator) design program (2001–2005)
  • Ongoing design projects
    • Reliable Replacement Warhead (RRW1) design program (2004-)

See also Enduring Stockpile.

Read more about this topic:  List Of Nuclear Weapons

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